Starting and stopping mechanism for looms



May 31, 1927. 1,631,067

W. SEVILLE STARTING AND STOPPING MECHANISM FOR LOOMS Filed Feb, 7, 19273 Sheets-Sheet 1 byzndwkw May 31 1927. w. SEVILLE 1,631,067

STARTING AND STOPPING MECHANISM FOR LOOIlS Filed Feb. 7. 1927 3Sheets-Sheet 3 Fig. 5.

InVemor. William Seville I b /M MIW Patented May 31, 1 927.

K321411511! L L-a 9 H EP A A U ETT s q o'a o, DRAPER 603F934? s'mn'muoamp STOPBING MEoHigfitsi/r 1 l on-Looks.

* fpr iqat on fi d E rua y This invention relates to in prove lnentsv inthe construction andoperatiohof means for ar d controller by :wli'ichthe brake may a ly be appl ed c in itlent lv With t e throwing off ofthe power-and released-When the; power. is'o f: 1 I A familiar: typeofysuch nechanis i lo ed t e; pa nt to A ble O granted October. 8,,19,01, and, while the; pres:

cnt invent on s in its broader aspects 0t wi aap ieet a i s mo e. paticu arly for the purpose of i nproyi g the construction and operationof th s general typeof mechanism and topsecuring. advantages and iiesults not hitherto obtairiable i "In he @Ile a im of a 0- it is des ab ethat the brake he releasable independently oihe pe ati n -116 sh paerlbeau e t t qe mlv n essa y ei r t m h loom over hby hand or to allow the[power o e thrown on alitt a ti e h s n c s a y n P e ing t e o ds mat ig he pick, properly positioning the shuttle and oth r s a jus in the epaat on of t looin. Variou mi a are rak -commonly employ d f l9l2Pil1gfl1Blom If th shuttle is improperly hoxed a protector mechanism is commonlyemployed acting through a fr g: It v u p re ksa'watp t p-mo ion a t t rugh sui abl c nnec n If he filling breaks orhecomes exhausted, a weftiorlg act through suitable connections. S a i s e irabl to stopthe-199mm h r m difi ren pasitions w th espec to the loom. In such vandother cases it is obvio sly des ab e hat the shippershall throw olf thepower and'the brake shall he api tl a t e sam t m o also, in t-arting'the loona,-the brake ini st be ffi'ltfi-fififi s multa w ly it-l o iaKlYa ce'Q-f he h owin a of he po e n, whether th aper on o s oppin andstarting thelop i is co trollgd byhand o ,--.er-teamti ally, i i OfmP-Qr that t yshipping bel/ t i he be applied o re e d: e b ake 11 7,1927. Serial No. 166,281.

the operatio SllfiLllbB positive, certain and und tlmcont l: of a m imumertion of force. 1

. Itis object otthe present invention to provide for all these and otherrequire nrents by simple; and efficient principle of construction. a

is. file abje Of the nvent n u th to provide a construction having,anpri ciple ot' operatiou which permits of; such leverage ratios as topermit the operationsof starting and stopping to be efi'ected by theapplica tijojn oi-small amourts of force, either by a handorautomatically. f also desirable that th; 'loo nj when. stopped shallstopator-near some definite point in its cycle-otn ov e rnent and it isa turther ohject of the invention to provide a n e chan s i'acting tosecure this-result.

Tl he actuator is con rrionly voperated or rnpyed toits'bifiakeoapplying position'b'y a sprir g and aturther. object ofthepresent nvent on is to' ernp'loyjthe impulse-of thiswrangle-accelerate the moveme'ntof "the brake entr l e to; app y ngposition and cqusequentlyto assist in a prompt and defitaap l eati n ofth a e- Another, feature of the invention resides in the; employment ofa latchinginechanism n eans'of which the brake actuator is held againstthe'power of its spring, locked in releas ngpositiomand Which, by theapplicat on of a comparatively small force exerted in thean ovement ofthe controller from releasing to, applying; position, is unlocked.

.- Theseand otllerobjects and features of the invention will appear morefully from the accompanying description and drawings and will hparticularly set forth in the claims. 'a 3 the generalconstruction andoperation of 1a -loom,' of the usual means for connectinghnddisconnecting powerto and from the twain-"Shaft, of the irari'ousmechanisms e111 lployeTd for automatically initiating the stopping ofthe loom upon tlie\mi'spositioning of the shuttle,- the breakage or"failure of a AS23113 Dr fillingof the usual brake mechanism'and of otherfeatures are well known "andtamiliar to t-hoseskilled intlie art, it is:onlymecessary for thezpurposes of this in- Q tiQn There to illustrate iand describe those features OfZCOIlSl'iIHCtiOII with which the invention1 ,isimore particularly concerned. 5

form of construction embodying the present invention embodied therein.

Fig. 2 is a front elevation of the loom partially broken away.

Fig. 3 is a top plan view on a larger scale of the shipper andcontroller mechanism shown in Figs. 1 and 2.

Fig. 4 is a detail in side elevation and partially broken away of theconstructionshown in Fig. 3 with the controller'and actuator in applyingposition.

Fig. 5 is a detail in cross section taken on the line 55 of Fig. 4.

Fig. 6 is a detail in cross sectiontaken on the line 66 of Fig. 4. v

Fig. 7 is a detail in cross section taken on the line 77 of Fig. 3. V

So much of the loom'as is illustrated is of the well known automaticNorthrop type having the side frames 1 and 2, the connecting breast beam3, the hopper stand 4 carrying the magazine or hopper 5 and having themain shaft 6 driven from a suitable source of power which may be of anyusual. form and is not illustrated.

A bracket 7 is secured to the loom side 1 and is provided with thedepending flange 8. A studis rigidly mounted in and projects from theflange 8. This stud preferably preemits a central, polygonal section 9and cylindrical threaded ends 10 and 11. The central section 9 enters acorrespondingly shaped aperture in the flange 8, as shown in Fig. 7, anda nut 12 is threaded on the end 10 and abuts the flange 8. A bearingsleeve 13 having a bore shaped to conform to the section 9 of thestud ismounted thereon and provided with a flange 14 at its inner end whichabuts the flange 8, while its outer end projects beyond the section 9 ofthe stud and is provided at its outer face with a recess. An abutmentmember 15, the function of which will later be described, fits over thecylindrical end 11 of the stud and is provided with a. projection 16flttingthe recess in the end of'thesleeve13. A-nut 17 is threaded on tothe end 11 of the stud. It will thus be seen that when the nuts-17 and12 are tightened up, the stud is held rigidly in the flange 8, and theabutment member is held rigidly in a fixed position with the bearingsection of the sleeve extending from the inner'wall of the abutmentmember to the head 1-4 of the sleeve.

The shipper 18 is in the form of a lever having a hub 19 journalled onthe bearing section of the sleeve 13. The controller 20 is also in theform of a lever having afihub 21 also journalled on the bearing sectionof thesleeve 13. The hubs 19 and 21 are slightly less in total thicknessthan the length of the bearingpo-rtion of the sleeve The upper andlonger arm22 of the shipper terminates in a handle by which it mayreadily, be operated, while the lower and shorter arm provided at itsend with an aperture 24 from which a connection may extend to anysuitable means for throwing on and ofl the power, it being understoodthat when the shipper is in the position shown in Figs. 1, 2 and 3', thepower is on, and when it is swung to the opposite position or to theleft, viewing Fig. 1, the power is oif. r p

The brake mechanism illustratedis shown as'a brake wheel 25 keyed to themain shaft.

and at the 'other end at 28 to a link 29' piv-' oted at 30 to anupwardly extending arm 31' of a bell crank lever fulcrumed at 32 to theloom frame.

bell crank lever extends substantially hori- Zontally to a point beneathand to the rear of the fulcrum stud ofthe controller and shipper. Alongitudinally adjustablelmk comprising the bar 34 threaded into thelower end of the flat plate 35 is pivoted at its lower end to the freeend of the arm 33 and extends vertically upward therefrom past and tothe rear of the fulcrum of the shipper and controller. An 1 actuatingspring 36 herein shown as of'the tension type is secured at its upperend to thearm 33 and at its lower end to some fixed part of the loom. Itwill be seen that the spring acts through the bell crank lever 31, 33and the brake band to apply the brake, and that an upward pull on thelink 34, 35 acts to release the brake. The bell crank lever 31, 33 withits operating spring 36 and the lever 34, 35 therefore constitute abrake actuator.

A latch 37 is pivoted at its upper end at 38 to the upper end of theplate 35 of the link and is provided atits lower front end with a notchor recess '39 adapted to engage a small antifriction roller 40journalled'at 41 in the rear end of the abutment member 15 alreadydescribed. A helical spring"42 The other arm 33of the seated in a recessin the outer face of the link plate 35 engages a stud 43 secured to andprojecting inwardly from the latch 37 and acts to swing the latchforwardly or toward the abutment. The construction is such that when theactuator is moved to releasin g position by an upward pull on the link34, 35 in opposition to thespring 36 T and-the notch 39 comes oppositethe roller 40, the latch will swing forwardly into engagement withthisroller on the abutment and thus lockthe actuator and brake in releasedposition. It'will be seen that in this position no strain is placed uponthe controller or shipper to hold the brake released wanes? againstthetension of the spring36; It will also be seen that in order to applythelbrake andv allow the actuating spring 36 to act mechanisnnis soarranged that only a small amount of force is required, due to 'theprinciple ofleverage ratios employed, to place the parts in lockedposition'and only a small force isrequired to unlock the latch and:

permit the application of the brake. 1 In the preferred constructionillustrated, both; of these things, that is, the raising of the, latchto locking position and the unlocking of the latch, are done throughdirect connections with the brake controller 20. To enable the link 34,carr in the latch to be raised,

an arm 44 is extended rcarwardly from the controller 20 and isprovidedat its rear end with an arcuate slot 45min the bottom of which is. anadjustable screwlockedwith a checknut and engaging a pin 46 secured toand projecting inwardly from the link plate 35. To knock off the latch37 from the abutment 15, when in locked position, a knockoff link isemployedconnecting the controllei-"and the latch. This'knock-oifv linkis shown as an adjustable two-part device comprising a bar-4'Zslotted at48 at its rear end to; engage a pin 49 secured in .the link 37 near itslower. end and'having at its forward end a hub-SOQthrough which passes athreaded L -shaped-irod 51, carrying check nuts 52 by which it-isadjusted, in the hub and which at its forward end is jour nalled in asleeve 53 rigid with and projecting laterally from the controller. 20above its fulcrum. The slot 45 permits limited, relative movementlongitudinally of the actuator link between the controller arm 44 andthe pin 46 and thus enables the control.- ler 20 to be swungsufliciently from releasing position to knock the latch off theabutment. lmn'iediately, however, the latch is knocked from theabutment, the pin 4 6 will engage the lower end of the slot and theimpulse of the actuator spring 36 will acceli crate the latter portionof the movement of the controller toapplying position. The slot 48 inthe knock-off link permits the necessary swingingmovement of the latch37 to ride upward past the roller 40 and then into. lockingposition whenthe link 34, 35 is raised and the latch 37 is providedat ,the front.with a suitable cam face 54 for this purpose.

Suitable means interposed between the shipper and controller .soarranged that when both the shipper and controller are in the sameposition and the shipper is swung in either direction, the controllerwill swing. with the shipper, and so arranged when the shipper is in onposition and the'eontroller in re lea P s on an he. n l er' s enshipper. 18'.

swung, to applying. position, tlieshipper will neso e when theshipperisin off? position and, the controller is in. applying position and thecontroller thenswung. to releasing position astopermit the shipper to beswung independentlybetween off and on positions. In theconstructionillustrated, the controller 20 at *itdlower, end isprovidedwith an arm- 5o extending below its fulcrum which has aprojection 56 extending laterallybehind .the

head of a sc ew stud 5 7 ad'ustably mounted l.

in. the lower end of the shipper. At a point position, and so arrangedthat well above the fulcrumgthe.shipper has pivotally mounted thereonalatch 58, the head (If-which is adapted toslide over and engage thefront face of a lug 59 projecting laterallyfrom the controller, whilethe'tail 60 of this latch, when the. shipper reaches releasw ingposition, engages a. buffer 61 on the. flange 8 and releases and holdsreleased the latchfrom'thelug 59. r

The usual frog anechanism, not shown, will preferably act againsttherear facexof the, armo and the 1111p stop, filling fork, or othermechanisms employed, may be cons nectedasusnal at suitable points.

lVhen the loom is to be stopped from the left hand side, the shipperhandle 18 isto be employed. Vhenthe loom is to be stopped from the righthand side, a mechm n ly anisrn such as that illustrated may be employed.A-shat't'62 is mounted. in suitable bearings 63 on the loom frame andextends transversely thereof. At the left-hand side this shaft isprovided with depending arm 64 having a projection 65 extending in frontof the shipper and av projection 66 extending behind a lug 67 on theshipper. At the right-hand side, the shaft 62 .is provided with anupwardly extending arm 68 connected by alink 69 to a lever 70 fulcrumedon a stud 71 mounted igna suitable bracket. 72, in this case shown ascarried by the hopper stand It will thus be seen that by mowing thelever I 70 at I the right-hand side of the loomin one direction or theother, the

shipper will beg-moved in the same direction and consequently the sameoccurrences will take place whether the operative grasps the. handle onthe lever 70 or the handle on the -Theprinciplo of inter-engaging meanson the controller 20- and the brake aetuator which act, when thecontrollervis swungto releasing position, to move the brake actuatortorelease the brake and permit the latch to en'gagethe abutment,together with the means on the controller which knocks the latch off theabutment when the controller is swungfrom releasingposition and permitsthe actuator to'apply the brake, enables leverage ratios to be employedpermittingthe application of a relatively-small force either to t elever TOatthe right-hand side ot; h

side of theloom to effect the loom or to the shipper 18,atthe left-handstarting and stopping of the loom.

So also the principle of the knock-oil release of the latch, togetherwith the accelera tion of movement of the controller to brake operationof the shipper, thus enabling the operative to turn the loom over byhand or to throw the power on a little at a time, as may be required.

The connections also enable the parts to be timed so that, when the loomis to be stopped, the application of the brake may begin before thepower 'is thrown off, thus ensuring a. still more accurate stopping ofthe loom at a predetermined point in its cycle of movement.

The invention thus presents a simple, effective, efficient andaccurately and easily controlled stopping and starting mechanism for aloom.

Having thus described I the invention, what is'claimed as new anddesired to be secured by Letters Patent is 1. Starting andstoppingmechanism tor a loom comprisinga shipper for throwing the poweron and oil", a brake, a spring-operated actuator therefor, a controllerfor the actuator, the said shipper and controller being pivoted sidebyside upon'a common axis, a fixed abutment,- a latch movably mounted onthe'brake actuator and engageable with the abutment when the brake isreleased to lock the actuator and brake in released position, meansacting, when the controller is swung to releasing position, to move theactuator against its spring and allow the latch to engage the abutmentand,

when the controller is swung to applying position, to knock the latchoff the abutment and allow the actuator to apply the brake, and meansinterposed between the shipper and controller acting, when both are inthe same position and the'shippcr is swung in either direction. to swingthe controller with the shipper and, when the shipper is in on positionand the controller in releasing posi-' tion and the controller is swungto applying position, toswing the shipper to oil position, and. when theshipper is in ofi''position and the controller in applyingposition andthe controller is swung to releasing po-' sition, to permit the shipperto be swung independently between the oil and on positions. I

2. Stopping mechanism for a loom comprising a brake, a spring operatedactuator therefor, a pivotally mounted controller for the actuator, afixed abutment, a latch IHOV? ably mounted'onthe actuator and engageable with theabutment when the brake is released to lock the actuatorand brake in on to oil position and from releasing.

to applying position, respectively, latching mechanism acting to lockthe actuator and brake 1n releasedpos1t1on, and means act-- mg, when thecontroller is swung from releasing to applying position, to unlock thelatching mechanism and allow the actuator to apply the brake.

4. Starting and stopping mechanism for a loom comprising theconstruction defined in claim 3 in which, when the latching mechanism isunlocked, the impulse of the actuator spring acts to accelerate themovement of the controller and shipper'to applying and oil positionsrespectively.

5. Starting and stopping mechanism for a loom comprising a shipper forthrowing the power on and oil", a brake, a spring-operated actuatortherefona controller for the actuator, the said shipper and controllerbeing mounted tomove together from on to of? position and fromreleasingv to applying position, respectively, a fixed abut- V ment, alatch movably mounted on the actuatorand engageable' with the abutmentwhen the brake is released to lock the actuator and brake in releasedposition, and means acting, when the controller is moved to releasingposition, to move the actuator against its spring and allow the latch toengage the abutment, and, when the controller is moved to applyingposition, to knock the latch off the abutment and allow the actuator toapply the brake.

6. Starting and stopping mechanism for a loom comprising a shippertor-throwing the power on and off, a brake, a spring-operated actuatortherefor, a controllerfo'r the actuator, the said shipper and controllerbe ing mounted to move together from on to off position and fromreleasing to applying position, respectively, a fixedabutment, a latchmovably mounted on the actuator and engageable' with the abutment whenthe brake is released to lock the ac t-uator and brake in releasedposition,-and means acting, when the controller is moved to applyingposition, to knock the latch ofi' the abutment and allow the actuator toap- 7 into locking engagement with the abutment,

an arm extended from the controller and engaging the actuator link witha connectlon permitting limited, relative movementlongltudinally of theactuatorlink and a knockoff link connecting the controller and lat-ch,whereby when the controller isswung to applying position, the knock-offlink first knocks the latch off the abutment and then the impulse of theactuator spring acts to accelerate the movement of the controller toapplying position.

8. Stopping mechanism for a 100m comprising a brake, a spring-operatedactuator therefor, a pivotally mounted controller for the actuator, afixed abutment, a latch movably mounted on the actuator and normallymovable into locking engagement with the abutment, inter-engaging meanson the controller and actuator acting, when the c0ntroller is swung toreleasing position, to move the actuator to release the brake and permitthe latch to engage the abutment,

and. means on the controller to knock the latch off the abutment, whenthe controller is swung from releasing position, and permit the actuatorto apply the brake.

9. Starting and stopping mechanism for a loom comprising theconstruction defined in claim 8, together with a shipper pivotallymounted on the same axis with the controller p prising a brake, a.spring operated actuator for throwing the power on and off, and meansinterposed between the shipper and controller acting, when both are inthe same position and the shipper is swung in either direction, to swingthe controller with the shipper, and. when the shipper is in on positionand the controller in releasing position and the controller is swung toapplying position, to swing the shipper to off position, and,

when the shipper is in off position and the controller in applyingposition and the controller is swung to releasing position, to'permitthe shipper to be swung independently between off and on positions.

10. Starting and stopping mechanism for a loomv comprising theconstruction defined in claim 3 in which a latch connects the saidshipper and controller when in on and releasing position, respectively,I and causes them to move together as specified in said claim and inwhich means are provided for releasing, and holding released, the latchwhen the shipper is in off position.

11. Starting and stopping mechanism for a loom comprisingtheconstruction defined in claim 8, together with a shipper pivotallymounted on the same aXis with the controller for throwing the power onvand oif, a latch connecting the shipper and controller when in on andreleasing position, respectively,

' and means acting to release, and to hold released, the said latch whenthe shipper is in off position.

12. Starting andstopping mechanism for a, loom comprising theconstruction defined in claim 3, together with a hand operated levermounted at the side of the loom opposite the shipper and connectionstherefrom to the shipper to effect the simultaneous movements thereof inthe same directions.

13. Starting and stopping mechanism for a loom comprising theconstruction defined in claim 5, together with a hand operated levermounted at the side "of the loom opposite the shipper" and connectionstherefrom to the shipper to effect the simultaneous movements thereof inthe same directions.

14. Starting and stopping mechanism for a loom comprising theconstruction defined in claim '6, together with a hand operated levermounted at the side of the loom opposite the shipper and connectionstherefrom to the shipper to effect the simultaneous movements thereof inthe same directions.

15. Stopping mechanism for a loom coming movement of the controllertothe actuator.

In testimony whereof, I have signed my name to this'specification.

I WILLIAM SEVILLE.

